Seiko Cal. 4521 - 592

The Seiko 4521-592 represents an important milestone in Seiko's 1972 lineup. Powered by the 4521 caliber with 30j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-dc737bfb7f58]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

38mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1972

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